1 Sainte Anne Military Hospital, Department of Oncologic and Digestive Surgery, Toulon, France. Electronic address: stephane_bourgouin@hotmail.fr.
2 Aix-Marseille University, UMR912 SESSTIM, Inserm, IRD and APHM La Timone, Department of Public Health, Marseille, France.
3 Sainte Anne Military Hospital, Department of Oncologic and Digestive Surgery, Toulon, France.
4 Sainte Anne Military Hospital, Department of Anesthesia and Intensive Care, Toulon, France.
5 Sainte Anne Military Hospital, Department of Oncologic and Digestive Surgery, Toulon, France; French Military Health Service Academy - Ecole du Val-de-Grâce, Paris, France.